Carrier for braiding machines



Jar-1. 12 ,1926. i 9 1,569,449

s. B. BLAlsDl-:LL

CARRIER FOR BRAIDING IACHINES Filed NOV. 18. 1922 gmentoc @99 .MWW N Urbina* Patented Jan. 12, 1926.

UNITED STATES SIDNEY B. BLAISDELL, OF PROVIDENCE, RHODE ISLAND.

CARRIER FOR BRAIDING MACHINES.

Appiication mea November 1s, 1922, serial No. 601,783.

To all whom it may conce/ra: v

Be it known that I, SIDNEY B. BLAisDELL, a citizen lof the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Carriers for Braiding Machines, vof which the following is a specification.

This invention relates to an improved construction of carriers for braiding machines, and has for its object to provide such a carrier in which a pawl and ratchet mechanism is employed as a let-off for the yarn package and a brake is provided for preventingv overrunning of the yarnwhen let off from the package.

A further object of the invention is the provision of a member removably mounted on the carrier on which a pawl member is pivotally mounted.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims. v

In the accompanying drawings,

Figure 1 is a side elevation showing` my improved carrier with the tension weight in section and the pawl as disengagedfrom the ratchet teeth.

Figure 2 is a front view. of a portion of the carrier and yarn package.

Figure 3 is a perspective view of the letoff pawl and brake arms.

Figure 4 is a perspective view of the pivoting member for supporting the pawl and rbrake arms.

Figure 5 is a perspective view showing one of the pivot arms of the pawl and brake member with the operating link connected thereto.

It is found in practice of advantage in the construction and operation of carriers for this purpose to provide a removable member on the carrier and to pivotally connect to this removable member pawl and brake arms which are arranged to be operated by a vertical movement of the yarn tension weight to control the yarn let-off from the yarn package, and to release the package and apply the brake to prevent overrunning when the weight is lifted excessively by a sharp pull on the yarn above the normal let-ofl operating point, and the following is a detailed -description of one means by which these results may be `accomplished Y:-

IVith reference to the drawings, 10 designates the -body ofthe carrier which'is pro vided with a hub 11 having a shouldered seat 12 into' which is set a package spindle 13.. This body is also provided with a weight-carryingstandard 14 and the usual web 15 to travel in the raceway.

A cop or bobbin 16 on which yarn 17 is carried is preferably provided at its lower end with ratchet teeth 18, and in order to provide a suitable pivoting point for the pawl lever arm 19, I have formed a Z- shaped pivot member 20 having a flat seat or plate 21 pierced at 22 to be positioned over .the spindle 13 andv this seat portion is provided with a pair of oppositely arranged, downwardly-turned pivot ears 23 pierced to receive the pivot pins 24.

In lorder to prevent this seat or plate from rotating on the spindle, I have provided a downwardly-extending neck portion 25 at the lower end of whichis a'forked member 26 adapted to straddle the base portion of the standard 14 which serves to firmly support the seat or plate 2l upon which the toothed end of the cop or bobbin rests.

The pawl 19 is preferably formed in the shape of a hollow frame having two opposite, parallel arms 27 and 28, each being-pivoted to its respective pivot ear 23 on the opposite sides of the hub 11. The pawl arm 27 is arranged to extend laround in front of the carrier and is provided with an upturned end or tooth 29 adapted to engage vthe ratchet teeth on the center line of the bobbin, the pivot point of this pawl being set somewhat forward of its center that is nearer its tooth-engaging end than to its opposite or operating end 39 thereby increasing the leverage on the end where it is operated. f

The rear or operating end of the pawl frame is provided with an integral bridge bar 30 to which the lower end of the operating wire link 31 is loosely connected as at with a loop 33 whichV loosely embraces the standard 14 and is adapted to be engaged by the yarn tension weight 34 which is mounted to slide vertically on this standard.

The inner end of this pawl is so arranged that when this connection is lifted by an excessive upward movement of the weight 34 it Will engage the under side of the yarn package on the broad bearing surface 40, thereby applying a friction brake t0 the 32, the upper end of this link being provided lil CII

'same to prevent over running in letting ott yam,

Vhen the yarn is led :trom the spool or package it passes through an eye '36 in the Weight standard let and down around the lower' edge of a Weight 37 and up through the guide eye 88 in the top oi this spindie, the Weight sliding on the spindle taking care of the surplusyarn during" the serpentine motion of the carrier in its raceway, and when more yarn is required the weight rises into engagement with the loop 38 oi'. the link 31 thereby operating the pawl to Withdraw its upturned end 37 from engagement With the bobbin teeth 18, p .rn itting the bobbin to rotate and iet ofi more yarn which is at once taken up by the drop o1 the Weight, but in case of very hard or eX- cessive pull on the yarn the Weight 334iis lifted sharply withdrawing the latch from its bobbin tooth and `at the same time the rear end of this arm l() engages the under side or" the bobbin 'to prevent an excessive univinding motion of the package, which action is found to be' of advantage and often necessary in'many cases particularly where the braider is running at a very high velocity.

By my improved construction of farrier the paWl and brake arms together with the means forppivotally supporting them on the carrier also the connecting operating link, may be assembled independently of the carrier and slipped into position over the spindle 13, the ytorked end 26 of `thisl member securely holding the Whole in operating position.

By this construction, the operating unit may be readily-removed from the-carrier for'inspection or repairs and a fresh one dropped into position Without seriously interfering With the operation of the carrier.

My improved carrier is very simple and inexpensive in -construction and yet practical. and etlicient in its operation.

The foregoing description is directed solely towards-the construction illustrated, but I desire it to be understood that 1 reserve the privilege 'of resorting to all the mechanical changes to which t-he device is susceptible, the invention being defined and limited only by theterms oi the appended claims. i

I claim:

1. lek-carrier for braiding machines having a package support and a Weight ystandard, a'pavvl `and-` ratchet yarn let-otf,'and a member" on 'Which said pavvl ispivotally mounted, said i memberv being mounted on the package support and free to be removed independently of said standard in the absence e''thepackage.

2;'A'ca1rier'for 'braiding machines having afa/eight standard, means for carrying .afyarn package! a paivl and ratchet yarn.

let-off for said package, and a member on Which said paivl' is pivotally mounted, said member having a portion providing a seat `for the package and tree to be removed independently of said standard when the package is absent from its scat.

3.' A; carrier -for braiding machines having a Weight standard, a yarn package support, a yarn vpackage on said support, a

paivl and ratchet mechanism for controlling the yarn let-olil from said package,'a niember on which said pawl is pivot-ally mounted, said member being iree to be removed in the absence of said package and having a portion engaging said standard to assist in maintaining it in operative position. rincari-ier for braiding machines having a yarn package supportedthereon, pawl and ratchet mechanism for controlling the yarnlet-otil from said package, said `paivl member being also adapted to apply a breaking action on the package to prevent excessive let oli?, and a separate member on which said pawl is pivotally supported, said member being mounted on said carrier to be freely removed therefrom in the 'absence of said package.

5. A carrier for braiding machines having a yarn package supported thereon, a let-ofi'1 pawl arm, a member mounted on the carrier and tree to be removed in the absence of said package and on which said arm is pivoted, said paivl arm having a tooth on one side oi its'pivot to positively hold the package against rotation and with means on Athe'oppos'ite side to trictionally engage the package to limit the extent of itslet-oii motion.

6.-V A, carrier for braiding machines having a yarn package supported "thereon, a let oil1 paivl arm, a supporting member removably mounted on 'the' carriery on ivhich said arm is pivoted, said paivl arm having a tooth on one side of Aits pivot point to positively hold the package against rotation and With means on the opposite side to frictionally engage the packageV to' limit the extent ot its let ofi1 motion, and means on said member for retaining it 'in operat'i'veposition When positioned on thecarrier.

7. A carrier for braiding machines having a yarn package supported thereon, a yarn tension vweight, a paivl and a ratchet mechanism `for controlling the yarn let off from said package, said paivl member being also adapted to apply a breaking action on the package to prevent excessive let off through action of said Weight,'and a separate member removably mounted on said carrier on which said pawl is pivotally mounted, vsaid member being provided with a forked end 'for engaging the weight sta-ndard to hold. it in operative pnsititm.7

' .8. A carrier for braiding machines having a yarn package supported thereon, a pavvl and a ratchet mechanism for control,- ling the yarn let off from said package, said pawl member being also adapted to apply a braking action on the package to prevent excessive let olf, a separate member' removably mounted on said carrier on which said pawl is pivotally mounted, said member being provided With a seat portion for supporting the package and having a holethrough which the package spindle extends, and means for retaining said member in operative position when applied to the car rier.

9. A carrier for braiding machines having a yarn package supported thereon,

'ratchet teeth on said package, a yarn Weight, a readily removable unit supported on the carrier comprising a let-off pawl for engaging said ratchet teeth, a support for the paWl on Which it is pivoted, said support being mounted to be freely lifted from its Working position in the absence of the package, and a link having one end positioned in the path of movement of said yarn Weight for causing the paWl to function to release the package When more yarn is required. v

lO. A carrier for braiding machines having a yarn package supported thereon, ratchet teeth on said package, a yarn Weight, a readily removable unit Supported on the carrier comprising an arm having a let-off paWl and a brake arm operated in unison therewith forcontrolling the let-ofl1` action of said package, a support for said paWl and ybrake arm on Which it is pivoted, and a link having one end positioned in the path of movement of said yarn Weight for causing the pawl to function to release the package when more yarn is required and apply a brake thereto to prevent eX- cessive let off.

In testimony whereof I affix my signature.

SIDNEY B. BLAISDELL. 

